| __register_chrdev(9) - phpMan
__REGISTER_CHRDEV(9) Char devices __REGISTER_CHRDEV(9)
NAME
__register_chrdev - create and register a cdev occupying a range of minors
SYNOPSIS
int __register_chrdev(unsigned int major, unsigned int baseminor, unsigned int count,
const char * name, const struct file_operations * fops);
ARGUMENTS
major
major device number or 0 for dynamic allocation
baseminor
first of the requested range of minor numbers
count
the number of minor numbers required
name
name of this range of devices
fops
file operations associated with this devices
DESCRIPTION
If major == 0 this functions will dynamically allocate a major and return its number.
If major > 0 this function will attempt to reserve a device with the given major number
and will return zero on success.
Returns a -ve errno on failure.
The name of this device has nothing to do with the name of the device in /dev. It only
helps to keep track of the different owners of devices. If your module name has only one
type of devices it's ok to use e.g. the name of the module here.
COPYRIGHT
Kernel Hackers Manual 4.8. January 2017 __REGISTER_CHRDEV(9)
|